These days, there’s an app for pretty much everything. While sites like Facebook, Twitter and Instagram boast profiles of everyone in your social circle, you may not know that a lot of these people are also dabbling in some of the lesser known social media apps beneath the surface.

While not many sites out there can boast the userbase of Facebook, the following three apps are the closest you’ll come to finding the hookup equivalent of Facebook.

Instafuck

Not only is Instafuck is pretty much the hookup equivalent of Facebook, it actually connects with your Facebook to find like-minded people.

This free app syncs with your Facebook profile to access your location, then finds potential fuck buddies based on your area code. In addition, Blendr will prioritize your search results by your Facebook friends who are also on Blendr. So, if you’ve ever wondered whether that old school friend of yours is single these days, Blendr will do the hard work for you.

Then, it’s just simply a matter of messaging them and letting them know what you’re looking for! Blendr is catered towards hookups and casual sex, so most of the people on there aren’t going to be looking for anything long-term.

Pure

If you want to hook up within the hour, Pure might be the perfect app for you.

Pure is sort of like a combination between Tinder and Snapchat. Once you’ve signed up and input your preferences, you’ll be able to make a post telling the world what you’re looking for. You’ll have to describe the kind of person you’re looking to meet and where you’d like to meet them. Pure will then throw out some matches at you and you’re free to message.

Your matches will be based on people with similar preferences to you as well as filtered by geographical region. But be warned, you won’t stay visible for long. You will only be displayed on other people’s timelines for one hour, then you will disappear until you create a new post.

It’s a perfect setup for people who looking to hook up right away and don’t want to be bombarded with constant messages throughout the day. It also ensures you remain discreet and keeps your intentions private until the time is right.

Happn

Happn is a dating app based on a simple idea. It tracks your movements when you’re on the road, then matches you with people who’ve crossed the same paths as you.

Much like Facebook, it will suggest matches based on their proximity to you. It will also filter your matches based on how often you and your potential matches spend time in the same space. For example, you will have a higher match percentage with someone who also spends their afternoons in the local coffee shop than you would with someone you’ve only shared walking space with once.

It’s not strictly a hookup app, but there’s a large majority of users on there who are looking for exactly that. It’s the perfect app to use if you’re based in a busy town or city.

David King, a self-proclaimed Right-Wing Jew, is the owner of Moving Kings, which is a moving company that progressively specializes in forcing people out from the dangerous corners of New York’s tri-state area- the parts that haven’t been gentrified yet. One day David’s distant cousin Yoav and his good friend Uri travel to NYC from Israel after they both complete their compulsory military service. David offers them jobs they’ll be perfect for—getting rid of delinquent tenants. But just as they are getting used to social life, they are somehow thrown into a situation fueled by revenge brings back some memories of the war zone they left behind.

4.)Goodbye, Vitamin by Rachel Khong

When her fiancé ditches her for another woman, Ruth temporarily accepts her mother’s offer to move back home. But when her father Howard, an admired history professor diagnosed with Alzheimer’s Disease, throws his pants (and most of the rest of his clothing) into the trees lit up by Christmas lights lining the streets, Ruth begins to quickly discover that this return isn’t going to be what she was expecting. As bizarre as it may sound, this is actually a pretty funny story of love, family drama, and old age that manages to keep a genuine tender touch while being unique and unpredictable in all the greatest ways.

3.) What We Lose by Zinzi Clemons

How does place describe us and the ones we adore? For Clemmons’s main character Thandi, the annual visits to Johannesburg, South Africa, the place where her mother was born, help shape and shake up her self-identity. Why do most people, which includes many of her South African extended family members, suggest that she may be categorized by the color of her skin? On one side of things, Clemmons subtly investigates the way identity is formed by location and cultural norms, while on the other side, she relives what it means to lose the person you love the most. As Thandi copes with her mother’s passing, we are invited to ask ourselves what the way we want to live is we and why.

2.) Sour Heart by Jenny Zhang

The first novel from Lena Dunham’s Lenny signature at Random House chuckles with vivid and familiar tales of newly arrived Chinese Americans who are adjusting to New York life. Just like Zhang, many of her protagonists arrive upon the shores of the US from Shanghai as young kids and are confronted with an unfamiliar language and parents trying to get used to the cultural divide.

1.) The Answers by Catherine Lacey

Mary Parsons is a former Southern Christian survivalist who became an NYC travel agency accounts manager overnight. She desperately needs to get some cash together quickly in order to take care of her grueling chronic pain, so she answers a highly paid Craigslist ad to take part in famous (but extremely lonely) actor Kurt Sky’s supposedly-called Girlfriend Experiment. What is Kurt’s hope? He hopes that an array of women wanting to be the “girlfriend” role for him and land him in the ‘perfect relationship. Sound pretty strange and peculiar? It is. It’s also a mesmerizing story about how people are not quite always what they seem.